From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932359AbXAONxB (ORCPT ); Mon, 15 Jan 2007 08:53:01 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932356AbXAONxB (ORCPT ); Mon, 15 Jan 2007 08:53:01 -0500 Received: from srv5.dvmed.net ([207.36.208.214]:47564 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932343AbXAONxA (ORCPT ); Mon, 15 Jan 2007 08:53:00 -0500 Message-ID: <45AB8738.6090405@garzik.org> Date: Mon, 15 Jan 2007 08:52:56 -0500 From: Jeff Garzik User-Agent: Thunderbird 1.5.0.9 (X11/20061219) MIME-Version: 1.0 To: Tejun Heo CC: Alan , linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Proposed changes for libata speed handling References: <20070112135301.4cdba24f@localhost.localdomain> <45A83DD2.5020000@gmail.com> <20070113100158.1d79ba9f@localhost.localdomain> <45AAF060.3040106@gmail.com> In-Reply-To: <45AAF060.3040106@gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.3 (----) X-Spam-Report: SpamAssassin version 3.1.7 on srv5.dvmed.net summary: Content analysis details: (-4.3 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org BTW, for a solution to be complete, we need to halt all work on all other ports, when issuing SET FEATURES - XFER MODE. On SiI and Promise controllers, possibly others, the command is snooped and side effects such as register setting occur. Long standing to-do. Currently we hack around this by serializing the bus probe, and preventing people from issuing SET FEATURES - XFER MODE from userspace. Jeff